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Ubi bene ibi patria
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Parcel Shelf Question
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dkbautosports.com
Join Date: Feb 2009
Location: branford ct
Posts: 3,316
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you should not be drilling all the way thru both panels your going to remove.
this is when the proper spot weld cutter comes into play and one reason why there are so many different types. |
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Ubi bene ibi patria
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Hi 962
I am using a Blair 3/8' spot weld cutter & still in the same pickle as I mentioned in my o/post. I now regret & see the error & folly of my ways in my initial attempts to separate the shelf from the lip in the 2nd photo. It is now clear I followed some rather specious advice in my first efforts - "live & learn" - I guess. What do you suggest in the way or type of cutters or think how I should proceed or the next steps necessary to solve what has become for me a rather intractable problem. Your input is most appreciated. Thanks & Cheers JB
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dkbautosports.com
Join Date: Feb 2009
Location: branford ct
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when im removing a welded on panel the 1st thing i always do is cut the hole thing out using a 4.5" cut off wheel , sawzall , and or air chisel just to get the majority of the unwanted metal out of the way. i like to leave about a 1/2" of the old panel left were the spot welds are .
when your drilling out the spot welds take a 1/8" drill bit and pit a little dimple in the center of the spot weld. this will do two things for you. the 1st is let you see them easier as your working to remove the panel and the 2nd is it will not let the spot weld cutter walk as easy. when ever you can you want to drill from the side of the panel your removing. this way your not left with a hole in the panel your saving that you will have to deal with. you want to pick a cutter just a little bigger then the size of the spot welds your removing. to large of a cutter will make it harder to cut thru just the one panel your removing. porsche along with most euro cars place spot welds about 2" apart they do this to make the car stronger it's twice as many as US or asian cars but also a PITA when you need to replace a panel. i still would rather it be a PITA then own a honda. when it comes to having to remove the edge that is left from the old panel i tend to use a ridged putty knife with the knife blade that goes all the way to the end of the handle. this way you can hit it with a hammer to drive the knife between the two pieces of metal to separate them. once i get them separated a little you then can use a panel splitter knife or an air chisel with a very flat chisel blade. at this point they should come apart pretty easily. when your using a spot weld cutter and they have replaceable cutting teeth buy an extra pack of them. rust will dull a cutting tool pretty quickly. also the center pins will break so an extra pack of them will come in handy too. spot weld cutters are designed for low speed drills a home drill made for wood is a high speed drill and will burn out the cutting blades real quickly. you cut slow speed for metals and use some WD40 when cutting. wd40 has no silicone so it's safe for you to use when doing autobody metal work. you can just wipe it off when your all done using thinner. |
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Hey 962
Thanks for your input. Much appreciated & thanks again. Cheers JB
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“Two possibilities exist: either we are alone in the Universe or we are not - both are equally terrifying” ― Arthur C. Clarke |
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Quote:
Could you offer a brand to use for the spot removal drill bits? Thanks, Rodney
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Rodney Nelson Certified Porschephile '82 SC (White) sold '86 951 (Guards) Burned to Death '71 911T (Orange) Sold '72 911E (White) Sold '86 951 (Black) Sold '79 SC (White) Sold '71 911 T (Green) Sold |
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dkbautosports.com
Join Date: Feb 2009
Location: branford ct
Posts: 3,316
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for spot weld drill bits i get them from belmetric. they will work with a normal drill
for our spot weld drill tool it's a dent fix tool so we use the dent fix bits for it . this tool works good for pinch type welded lips. i also like the blair premium cutters with the pins. i like blair products i have there cutter drill but it's a POS when it works it works good the down side is after about two years it broke we sent it back and had it repaired to only break again about a year later. sent it back out had it repaired and now i just use the dent fix tool. i don't use just one type of cutter for removing spot welds i will use many different ones depending on just where and what the weld is. most all spot weld removal drills you do not want to have a RPM more then 500. low speed it the key to having them work there best. i have had many hurt hands from a drill bit slipping off the spot weld and my hand punching the panel. it's just part of the job. |
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Thank you for the reply 962porsche!
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Rodney Nelson Certified Porschephile '82 SC (White) sold '86 951 (Guards) Burned to Death '71 911T (Orange) Sold '72 911E (White) Sold '86 951 (Black) Sold '79 SC (White) Sold '71 911 T (Green) Sold |
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